Patents by Inventor Min-Hyuk Choi
Min-Hyuk Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11475849Abstract: Embodiments relate to a display device with reduced scanning time by using a reference line separate from a data line to improve frame rate of the display device. A first pixel in a first row samples a reference voltage during a first period and samples a data voltage during a second period. A second pixel in a second row adjacent to the first row samples the reference voltage during a third period and samples the data voltage during a fourth period, where the third period overlaps with at least a portion of the second period. The reference voltage is provided by the reference line that is connected to a reference buffer, and the data voltage is provided by the data line connected to a source driver circuit.Type: GrantFiled: May 12, 2021Date of Patent: October 18, 2022Assignee: Meta Platforms Technologies, LLCInventors: Wenhao Qiao, Cheonhong Kim, Min Hyuk Choi
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Patent number: 11468577Abstract: A device for providing 3D image registration includes: a collection unit acquiring 3D depth data of a part and an image of a registration body from a depth recognition camera and acquiring three-dimensional coordinates of a positioning tool on the registration body from a positioning device; a first registration unit performing surface registration of a pre-stored 3D medical image of patient and the 3D depth data; a second registration unit extracting camera reference three-dimensional coordinates of a landmark attached to the registration body from the image of the registration body and converting pre-stored relative position information of the landmark with reference to the three-dimensional coordinates of the positioning tool, to perform registration of camera reference three-dimensional coordinates of the landmark and the converted position information thereof; and a third registration unit performing final registration by using results of registration performed by the first registration unit and the secoType: GrantFiled: October 22, 2018Date of Patent: October 11, 2022Assignee: GMEDITEC CORP.Inventors: Won-Jin Yi, Sangjeong Lee, Min-Hyuk Choi
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Patent number: 11462176Abstract: Embodiments relate to a display device including bonding pads on a display element where data signals for a plurality of columns of pixels are provided to a same bonding pad in a time-divisional manner. Each of the bonding pads is connected to a plurality of demultiplexer circuits for sampling data signals at the bonding pad, storing the data signals, and transferring the sample data signals to corresponding columns of pixels. Each column of pixels includes a plurality of columns of subpixels, and a period during which a demultiplexer circuit samples the bonding pad for a column of subpixels of a first color may at least partially overlap with a period during which the demultiplexer circuit transfers previously sampled data signals to a column of subpixels of a second color.Type: GrantFiled: December 22, 2020Date of Patent: October 4, 2022Assignee: Meta Platforms Technologies, LLCInventors: Min Hyuk Choi, Wenhao Qiao
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Patent number: 11436987Abstract: A display device dynamically determines a duration of the illumination period for a display frame to adjust an average brightness of a display device as the framerate dynamically changes. The display device includes a backlight unit (BLU) for providing light for displaying an image, a plurality of pixels for modulating the light provided by the BLU, and a controller circuit for controlling the BLU. The controller circuit measure a duration of a previous frame and determine a duration for an illumination period of a current frame based on the measured duration of the previous frame. The control circuit then controls the BLU based on the determined duration of the illumination period for the current frame.Type: GrantFiled: May 11, 2021Date of Patent: September 6, 2022Assignee: Meta Platforms Technologies, LLCInventors: Cheonhong Kim, Min Hyuk Choi, Alexander Klement
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Publication number: 20220199035Abstract: Embodiments relate to a display device including bonding pads on a display element where data signals for a plurality of columns of pixels are provided to a same bonding pad in a time-divisional manner. Each of the bonding pads is connected to a plurality of demultiplexer circuits for sampling data signals at the bonding pad, storing the data signals, and transferring the sample data signals to corresponding columns of pixels. Each column of pixels includes a plurality of columns of subpixels, and a period during which a demultiplexer circuit samples the bonding pad for a column of subpixels of a first color may at least partially overlap with a period during which the demultiplexer circuit transfers previously sampled data signals to a column of subpixels of a second color.Type: ApplicationFiled: December 22, 2020Publication date: June 23, 2022Inventors: Min Hyuk Choi, Wenhao Qiao
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Patent number: 11355043Abstract: Embodiments relate to a display device including pixels arranged in rows and columns, where duty cycles of the pixels are dynamically programmed according to eye tracking information. For a display frame, the display device may determine a gaze region and a non-gaze region based on the eye tracking information. A control circuit of the display device controls a first subset of pixels in the gaze region to operate with a first duty cycle and controls a second subset of pixels in the non-gaze region to operate with a second duty cycle greater than the first duty cycle. The first subset of pixels emits light with greater brightness than the second subset of pixels.Type: GrantFiled: February 18, 2021Date of Patent: June 7, 2022Assignee: Facebook Technologies, LLCInventors: Min Hyuk Choi, Wenhao Qiao, Donghee Nam, Wonjae Choi, Zhiming Zhuang
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Publication number: 20220157798Abstract: A display system includes (a) a display element having an organic light emitting diode-containing display active area disposed over a silicon backplane, (b) a display driver integrated circuit (DDIC) attached to the display element and electrically connected with the display active area, and (c) a thermal barrier disposed within the silicon backplane, where the thermal barrier is configured to inhibit heat flow through the silicon backplane and into the display active area.Type: ApplicationFiled: November 16, 2020Publication date: May 19, 2022Inventors: Young Bae Kim, Donghee Nam, Min Hyuk Choi, Zhiming Zhuang
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Publication number: 20220147124Abstract: A system includes a display panel, a temperature sensor configured to measure a temperature of the display panel, a thermoelectric device coupled to the display panel and configured to transfer heat to or from the display panel, and a controller electrically coupled to the temperature sensor and the thermoelectric device. The controller is configured to receive the measured temperature of the display panel and, based on the measured temperature of the display panel, send a second signal to the thermoelectric device to cause the thermoelectric device to remove a first quantity of heat from the display panel or send a third signal to the thermoelectric device to cause the thermoelectric device to provide a second quantity of heat to the display panel.Type: ApplicationFiled: November 9, 2020Publication date: May 12, 2022Inventors: Min Hyuk CHOI, Zhiming ZHUANG, Kyung Won PARK
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Publication number: 20220146832Abstract: A method including determining a maximum luminance location of a display based on a field of view of an eye of a user of the display, and driving a plurality of light sources in the display based on locations of the plurality of light sources with respect to the maximum luminance location of the display. The plurality of light sources is controlled to have different luminance levels in different display zones corresponding to different zones on the retina of the eye of the user. In some examples, the display zones of the display system that have higher luminance levels can be dynamically changed based on the field of view or the gaze direction of the eye of the user.Type: ApplicationFiled: November 18, 2021Publication date: May 12, 2022Inventors: Min Hyuk CHOI, Zhiming ZHUANG, Wonjae CHOI, Cheonhong KIM
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Patent number: 11322095Abstract: Embodiments relate to a display device including an active display area with pixels arranged in rows and columns, where a focus area of the active display area is operated in a progressive scanning manner and a non-focus area of the active display area is operated in an interlaced scanning manner. The active display area is driven by a gate driver circuit that supplies gate signals the pixels. First stages of the gate driver circuit are coupled to first rows of the pixels that are in the focus area and output first gate signals in the progressive scanning manner. Second stages of the gate driver circuit are coupled to second rows of the pixels that are in the non-focus area and output second gate signals in the interlaced scanning manner.Type: GrantFiled: March 5, 2021Date of Patent: May 3, 2022Assignee: Facebook Technologies, LLCInventors: Zhiming Zhuang, Min Hyuk Choi, Donghee Nam, Wonjae Choi
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Publication number: 20220091418Abstract: A method of leakage-compensated global illumination comprises obtaining position data for at least one of a head or an eye of a user of a display system by an application processor, rendering image data for an image frame by the application processor based on the position data, modifying the image data to compensate for leakage associated with a global illumination by a display of the display system, and sending the image data to a display driver circuit of the display system for displaying the image frame on the display through the global illumination.Type: ApplicationFiled: September 21, 2020Publication date: March 24, 2022Inventors: Min Hyuk CHOI, Zhiming ZHUANG, Wonjae CHOI
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Patent number: 11244996Abstract: A device such as a micro-OLED includes a display element having a display active area disposed over a silicon backplane and a display driver integrated circuit (DDIC) electrically coupled to the display element through at least one contact that extends through the silicon backplane. Through silicon via (TSV) technology may be used to form the contacts. A chip-on-flex architecture may be used to orient and attach the DDIC to the silicon backplane.Type: GrantFiled: April 27, 2020Date of Patent: February 8, 2022Assignee: Facebook Technologies, LLCInventors: Min Hyuk Choi, Cheonhong Kim, Richard Han Soo Cho
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Patent number: 11209656Abstract: A method including determining a maximum luminance location of a display based on a field of view of an eye of a user of the display, and driving a plurality of light sources in the display based on locations of the plurality of light sources with respect to the maximum luminance location of the display. The plurality of light sources is controlled to have different luminance levels in different display zones corresponding to different zones on the retina of the eye of the user. In some examples, the display zones of the display system that have higher luminance levels can be dynamically changed based on the field of view or the gaze direction of the eye of the user.Type: GrantFiled: October 5, 2020Date of Patent: December 28, 2021Assignee: FACEBOOK TECHNOLOGIES, LLCInventors: Min Hyuk Choi, Zhiming Zhuang, Wonjae Choi, Cheonhong Kim
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Publication number: 20210362142Abstract: Provided are a catalyst composition with improved processability and chemical warfare agent degradation ability, a film composite manufactured by casting the same, and a preparation method thereof. Specifically, provided are a catalyst composition including a copolymer of a first polymer and a second polymer; and a metal-organic framework (MOF), and a film composite including the same, wherein processability and catalytic activity are improved.Type: ApplicationFiled: January 29, 2021Publication date: November 25, 2021Inventors: Kyung Youl BAEK, Soon Man HONG, Seung Sang HWANG, Chong Min KOO, Seon Joon KIM, Albert LEE, Jin Young SEO, Min Hyuk CHOI, Yu Ri LEE, Sejin KIM, DO XUAN HUY, Que Thi Nguyen, Sangho CHO
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Publication number: 20210335896Abstract: A device such as a micro-OLED includes a display element having a display active area disposed over a silicon backplane and a display driver integrated circuit (DDIC) electrically coupled to the display element through at least one contact that extends through the silicon backplane. Through silicon via (TSV) technology may be used to form the contacts. A chip-on-flex architecture may be used to orient and attach the DDIC to the silicon backplane.Type: ApplicationFiled: April 27, 2020Publication date: October 28, 2021Inventors: Min Hyuk Choi, Cheonhong Kim, Richard Han Soo Cho
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Patent number: 11158690Abstract: A method of manufacturing a display system includes forming a display element having a display active area over a silicon backplane, forming a display driver integrated circuit (DDIC), and bonding the display element to the display driver integrated circuit (DDIC). The display active area may include a light emitting diode such as an organic light emitting diode (OLED). Separately forming the display and the display circuitry may simplify formation of the OLED and allow for a higher density control interface between the display and the DDIC.Type: GrantFiled: July 31, 2019Date of Patent: October 26, 2021Assignee: Facebook Technologies, LLCInventors: Min Hyuk Choi, Cheonghong Kim, Zhiming Zhuang
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Publication number: 20210303063Abstract: In one embodiment, a computing system may determine a first region and a second region of an image based on gaze data of a user. The second region of the image may be displayed with lower image resolution. The system may access a first pixel value associated with the first region of the image and cause a first source driver circuit to generate a first pixel signal. The first pixel signal may be configured to control a luminance of a first number of pixels of the display. The system may access a second pixel value associated with the second region of the image and cause a second source driver circuit to generate a second pixel signal. The second pixel signal may be configured to control a second number of pixels, which is larger than the first number and may include a longer pulse duration than the first pixel signal.Type: ApplicationFiled: April 1, 2021Publication date: September 30, 2021Inventors: Min Hyuk Choi, Cheonhong Kim, Youngshik Yoon
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Patent number: 11009944Abstract: In one embodiment, a computing system may determine a first region and a second region of an image based on gaze data of a user. The second region may be displayed with lower image resolution than the first region. The system may access a first pixel value associated with the first region of the image. The system may cause a first source driver circuit of a display to generate a first pixel signal. The first pixel signal may be configured to control a luminance of a first number of pixels. The system may access a second pixel value associated with the second region of the image. The system may cause a second source driver circuit of the display to generate a second pixel signal which may be configured to control a luminance of a second number of pixels. The second number may be larger than the first number.Type: GrantFiled: July 24, 2019Date of Patent: May 18, 2021Assignee: Facebook Technologies, LLCInventors: Min Hyuk Choi, Cheonhong Kim, Youngshik Yoon
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Patent number: 10991320Abstract: The disclosed computer-implemented method may include determining a frame rate for a current frame, where the frame rate dictates the amount of time the current frame is to be presented on a display. The display may be a backlight that is powered for a specified amount of time as part of a duty cycle. The method may further include calculating a backlight duty cycle time for the current frame. The backlight duty cycle time may include a minimum amount of powered time plus an additional amount of powered time that is dependent on the frame rate for the current frame. The method may further generate a drive signal for the display using the calculated backlight duty cycle time and driving the display using the generated drive signal. Various other methods, systems, and computer-readable media are also disclosed.Type: GrantFiled: August 20, 2019Date of Patent: April 27, 2021Assignee: Facebook Technologies, LLCInventors: Cheonhong Kim, Min Hyuk Choi, Rui Zhang, Samuel Gosselin
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Patent number: 10901217Abstract: A headset includes a compact wide field of view optics block. The headset includes a display element and an optics block. The display element is configured to generate image light. The optics block is configured to direct the image light to an eyebox. The optics block includes a projection lens and a panoramic lens. The projection lens has a first diameter and is adjacent to the display element and is configured to receive the image light from the display element. The panoramic lens is positioned between the projection lens and the eyebox. The panoramic lens has a second diameter that is larger than the first diameter and is configured to provide the image light that has been transmitted by the projection lens to the eyebox.Type: GrantFiled: January 4, 2019Date of Patent: January 26, 2021Assignee: Facebook Technologies, LLCInventors: Youngshik Yoon, Min Hyuk Choi